When greater accuracy is required, the following equations can be used to represent the curves plotted in Figures 3.34 to 3.36 . The various symbols used are presented in Figure A6.1. The subscript T is for the truncated CPC design.
Figure A6.1 A truncated CPC. its height-to-aperture ratio is about one half the full height of a CPC.
The following equations apply for a full and truncated (subscript T) CPCs (Wellford and Winston, 1978):
For a truncated ...